Available Answers

1. 1.

   Choose the most appropriate answer.

   1. The process of eliminating waste from the body is called
      1. respiration
      2. transpiration
      3. expiration
      4. excretion
   2. The bowman's capsule and glomerulus together form the
      1. renal capillaries
      2. malpighian body
      3. urinary bladder
      4. urethra
   3. The filtering unit of the kidney consists of
      1. Bowman;s capsule
      2. Nephrons
      3. Malphighian tubules.
      4. all of these.
   4. The opinion of th e urinary bladder is called
      1. nephron
      2. uriniferous tubule
      3. urethra
      4. nephridia
   5. A network of capillaries present in the Bowman's capsule is called
      1. Malphighian body
      2. glomerulus
      3. uriniferous tubule
      4. ureter
2. 2.

   Fill in the blanks.

   1. All organisms have special organs called ____________________ organs to get rid of their harmful waste.
   2. Each kidney contains millions of ___________________ which act as filtration units.
   3. The network of blood capillaries in the Bowman's capsule is known as ___________________
   4. Sweat glands to eliminate _______________________,____________________ and other metabolic wastes in the form of sweat.
   5. A person with improperly functioning kidney undergoes _____________________
3. 3.

   State if the following statements are true or false. Rewrite the false statements correctly.

   1. Excess water-soluble vitamins are also excreted along with urine.
   2. Ureters are narrow tubes that lead out from each kidney.
   3. In the longitudinal section, a kidney shows two main regions - outer medulla and inner cortex.
   4. Urethra is a tube-like opening at the bottom of the urinary bladder.
   5. Liver produces bile pigments from the haemoglobin of broken RBCs.
4. 4.

   Circle the odd one out. Give reasons for your choice.

   1. nephron, Bowman's capsule, glomerulus, nephridia
   2. ammonia, urea, uric acid, amino acid
   3. ureter, urinary bladder, urethra, lenticel
5. 5.

   Differentiate between Ureters and Urethra.

6. 6.

   Differentiate between Urinary tubule and Urinary bladder.